Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Great looking work!

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Looking better with every picture! I hope you have a big shop to work in. This thing is getting big:eek:

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

WOW!!! And I thought trying to work out the angle cuts on my rocket rack was a bear! Nothing in comparison to this. Going to try and make the Cabin Fever show in Jan. Really want to see this in person.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

it be great to see you lynn hope you can make it . Steve you got to work more sleep less :p looks great :eek:

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Wow steve your brass work looks awsome ,thing is looking huge too..I could just imagine being close to the 1 to 1 machine after seeing the size of a 1/16:) thumbs up ...it gets better every day

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

I had a question from another site on how I'm joining my parts.............

All of the above. I tig welded the ends of the steel beams where needed. Bolted with literally thousands of 0-80 bolts and up to 1/4-20 bolts on parts not seen. Riveted pieces together on the brass exterior with .040'' dia rivets. And I'll be soldering and bolting the brass boom sections.

http://img408.imageshack.us/img408/5227/1003277a.jpg

Early stages of the ESCO bucket.
http://img62.imageshack.us/img62/794/1003248.jpg

Bolting nightmare!
http://img690.imageshack.us/img690/613/1003162j.jpg

View of some of the fairlead structure rivets
http://img32.imageshack.us/img32/3412/1003006w.jpg

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

I finally got to solder one of the side pieces together. It was a little tricky till I got on to it.
Here's the last mock up before soldering....
http://img88.imageshack.us/img88/2633/1003560i.jpg
http://img109.imageshack.us/img109/4323/1003561.jpg

View showing lamination's on the base
http://img703.imageshack.us/img703/6971/1003563.jpg

Center break
http://img100.imageshack.us/img100/296/1003564j.jpg

Hot out of the fixture. I still need to do some soldering on this side where the solder didn't flow thru.
http://img573.imageshack.us/img573/1069/1003568.jpg
http://img593.imageshack.us/img593/6152/1003569.jpg

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

NICE WORK!! Are you doing the resistance soldering?

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Not yet, I tried but the big aluminum fixture sucks all the heat too fast for the medium size tweezers and 250W power unit. I don't have the proper conductor pliers for my bigger power units. I used my jewelers torch instead.
I set the finished truss between two counters and pushed down and there's no deflection with a reasonable downward force. This strength sure beats my temporary boom:D

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Nice!! Hope to see it in Jan!! Only thing that is going to stop me, would be the weather! I am getting cabin fever NOW!!! Let alone by Jan.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Looking impressive, amazing what strenght you get from those brass tubes/profiles. Have had a drag line in mind for next project but thought I had to go with steel profiles on boom. Looking forward seeing it in real next time in us!
Dan

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Beautiful work, really like the detail, it will be a museam piece when complete. Fred

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Thanks you guys, Right now I've been designing the diagonal bracing at the splice through the cross section.Tiny work here and I may have to use some of the .040'' rivets instead of bolts,there's just no room in the 5/32 angles to clear both bolt heads. Once that's figured out I can solder the braces on the top and bottom of this section.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

wow thats amazing!!!

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

You never seize to amaze me with your craftsmanship Steve.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Here's a little work done but I have a paying job I need to get shipped by Thanksgiving.
http://img264.imageshack.us/img264/3743/1003576l.jpg

Here's the tiny rivet I spoke of before.
http://img708.imageshack.us/img708/4321/1003577p.jpg

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

geeeeeeeeeeeeeezzzzzzzz and i been complainin about 3/32 and 4/40 stuff lol you do amaizing work this is a cool thread to watch as you built very detailed and percision work very nicely done keep up the great work

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

That's getting really small steve-could you solder this or do you need the rivets for the scale appearance?

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Henry, I remember sweating blind tapping the #3-48 bolts on the bearing caps for the drums and parts on the walking cams. #0-80 is a whole new world that I've learned on the structure.:p

Tom, I need rivets because the heads of the bolts will hit on the two axises of the angle. I'll rivet these and solder. I don't think just solder will hold well here and rivets look so nice. It will be clearer when I get it installed.

Re: 1/16 Bucyrus-Monighan Walking Dragline
 

Wow. It keeps getting better and better. Truly a masterpiece in the making.

I've been working with a lot of 2mm srews on my model and I've come to the point where I'm going to need to tap some 2mm threads into some blind holes as well, in aluminum, so I know what you mean about sweating that job! 2mm screws are pretty small as well. Maybe not as bad a #0-80s though. Looks like you've got a lot more to worry about then I do! About all a guy can do is use some good thread cutting oil, go slow, and keep backing the tap out every turn or so. Maybe even stop, back it out, flush the chips out, or blow them out with air, and continue. At least the bolts and nuts will be easier! Are you going to loc-tite everything as you go?